. >> fewer americans are working today than when president obama took office. >> but if the air war is important, the ground war could be important. an emotional opening of the latest obama campaign field office, they now have more in an 100 in the state. the romney campaign just over 30. here they're trying to rebuild obama's 2008 winning coalition of women, young people ri and african-americans to rekindle the old magic. >> fire it up. >> ready to go. >> door-to-door canvases check up on obama who vote -- on people who voted for obama last time. >> are you going to be voting this election? >> yes. >> i'm a volunteer with president obama's re-election campaign. >> others on the list get a phone call. tonight's session is aimed at women voters. their opponents say they're working just as hard and despite the polls there's everything to play for. >> our job is to knock on every door, call every person we possibly can, deliver every last piece of mail and the campaign's job is to close the deal, sell that last voter on that inspirational, aspirational message of where governor romney wan